Corkscrew



FIG. 1 is a front view of the corkscrew showing my new design;

FIG. 2 is a rear view of the corkscrew of FIG. 1;

FIG. 3 is a side view of the corkscrew of FIG. 1;

FIG. 4 is a top plan view of the corkscrew of FIG. 1;

FIG. 5 is a bottom plan view of the corkscrew of FIG. 1; and,

FIG. 6 is a perspective view of the corkscrew of FIG. 1.

The broken lines in the drawings are included for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a corkscrew, as shown and described. 